set up speed tracer with ubuntu 9

I am having a small issue in setting up speed tracer with ubuntu. any he开发者_JS百科lp (document/hints...) will be appreciated.

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Put chrome on the upper, gray panel.
Right click the chrome icon and choose Properties.
Now append "--enable-extension-timeline-api" to the text in the Command field.

In my case the Command field contains:
/opt/google/chrome/google-chrome %U --enable-extension-timeline-api

Click Close. Restart chrome.

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There's a handy tutorial the Google Developers put up at:

http://www.youtube.com/watch?v=Sn_3rJaexKc

And some examples on how to use it at :

http://code.google.com/webtoolkit/speedtracer/speed-tracer-examples.html

But you're probably best off starting at :

http://code.google.com/webtoolkit/speedtracer/get-started.html

to get your head around the concepts and features involved.

Good luck!